Acts 8:23
For I see that you are a bitter weed and a bundle of crookedness!"
Romans 1:31
conscienceless, treacherous, with no human love or pity.
2 Timothy 3:3
lacking in love for kinsmen, irreconcilable, slanderers, having no self-control, savage, lacking in love for the good,
Hebrews 12:15
Continue to look after one another, that no one fails to gain God's spiritual blessing; or some evil like a bitter root may spring up and trouble you, and many of you be contaminated by it --
Revelation 8:10-11
Then the third angel blew his trumpet, and there fell from the sky a great star blazing like a torch, and it fell upon one-third of the rivers and the springs of water.